Unless you pick the wrong God. Unless God rewards skepticism and punishes blind faith. Unless...etc.
Re: rewarding evil - I think Descartes addressed that issue with his “esprit malin”/”mauvais genie”. Just doesn’t hold up. The question was whether Pascal was the one associated with the statement. The answer is yes, he was.
If you are looking to dig into the theological ramifications of the simplicity of his statement, that, of course, is another question altogether and not one I addressed in my post.